Support System：IOS (Apple) 13.0.0 and above, Android 7.0.0 and above, Harmony 2.0.0 and above.All series of iPhone models（such as suitable for iPhone 11/12/13, iPhone 12/13 Pro, 12/13 Pro Max, 12/13 Mini, iPhone 14） | Battery：3V AAA (size 7) battery*2 (purchased separately). No need to connect to APP, connect to Phone directly、Android can operate the phone for underwater photography. | Easy to Install and Use：one-button operation. We have designed a waterproof case with a large "shutter", you can directly press the "shutter" to capture all your underwater adventures. Place the phone in the correct position, close the lid, and then close the buckle. The diving watch case uses composite metal fasteners and folding snaps, which are more durable and tighter. | Professional Underwater Photography Phone Case：the whole body is sealed to prevent scratches and dust, which greatly improves the waterproof and pressure resistance of the waterproof phone case. The Seafrogs shell also has the functions of snow, shock, and drop resistance, and is sturdy and durable to adapt to a variety of harsh environments. It is very suitable for diving, surfing, snorkeling, skiing, kayaking, yachting or other outdoor activities. It is designed for adventurers. | Note：Before putting the phone in the water, please conduct a waterproof test (method: put the paper towel in the shell, put it in the water for 10-15 minutes, take out the wipe and check the paper towel).Please note that when you receive the product, check the vacuum handle at the bottom of the box, please do not throw it away.(Aslo，when conducting underwater tests, please remember to check whether the waterproof ring is damaged or loose.)